Automatic combination-wrench.



T. W. GIBSON.

AUTOMATIC COMBINATION WRENCH.

APPLICATION FILED JULY27, 1912.

Patented Mar. 18, 1913.-

A 2 Q g A w I, :2 8 A A A Q 9 E E N O A) v 2 u A A 1:

UNITED STATES PATENT FFTCE.

THOMAS V. GIBSGN, OF HOMINY, OKLAHOMA, ASSIGNOR F ONE-HALF TO 1?. H. EAR-BIS, 0F HOMINY, OKLAHOMA.

AUTOMATIC COMBINATION-WRENCH.

To all whom it may concern:

Be it known that I, THOMAS \V. GIBSON, a citizen of the United States, residing at Hominy, in the county of Osage and State of Oklahoma, have invented certain new and useful Improvements in Automatic Combi- IliltlOll-YVTQHOllGS, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in wrenches and particularly to quick acting wrenches.

The object of my invention is to provide a wrench of the class described which may be readily engaged with the object to be turned and as readily disengaged there from.

(Ether objects and advantages will be hereinafter made clearly apparent in the specifications and pointed out in the claims.

In the accompanying drawings I have shown the preferred forms of my invention.

In said drawings, Figure 1 is a side elevation showing the preferred form of my wrench. Fig. 2 is a longitudinal sectional view through the parts of the wrench, and, Fig. 3 is a detail sectional view through a portion of a modified form of construction.

Referring to the drawings by numerals of reference, similar reference numerals designating corresponding parts throughoutthe several views, 4: is the handle of my wrench, which is preferably formed of a single bar of metal, which is bent substantially into U-shapc, as is clearly indicated in Fig. one arm of said bar being bent in termediate its ends so as to extend in a direction parallel with the other arm of said bar. The stationary aw 5 of my wrench is secured in any desired manner, as by pins 6, to the ends of the bar 4:. As shown, the head 5 is provided with parallel bores 7 adapted to receive the ends of the bar 1, and the pins 6 are extended transversely through said head and the ends of said bar.

In the drawings I have shown the head 5 of the ordinary flat-faced type, although I desire it to be understood that any form of suitable stationary head may be employed. The movable jaw S of my wrench is proided with a single slot 9, through which the arms of the bar extend, and said head is pinned or otherwise secured to one end of Specification of Letters Patent.

Application filed July 27, 1912.

Patented Mar. 18,1913.

Serial No. 711,882.

an operating bar 10. The opposite end of said bar 10 is provided with a rack 11, which is engaged by a pinion 12.

As hereinbefore described, one end of the bar 4 is bent toward the other bar and exwith the rack 14:, which engages with the periphery of the pinion 12 at a point opposite its engagement with the rack 11. The shaft of the pinion 12 extends to either side thereof and the bar 1 is slightly cut away to form seats therefor, so that there will be no tendency for the pinion to move longitudinally of the wrench.

In operation the wrench is picked up by the handle 13 and held so that the jaws thereof will extend vertically and the weight of the parts of the wrench and the arrangement of the racks 11 and 14 and the interposed pinion 12 will cause the awe of the wrench to separate. The stationary jaw 5 may then be placed on one side of the object, which it is desired to operate upon, and a pull is given the handle 13 from said jaw, which results in the rack 14 rotating the pinion 12 in a clock-wise direction and the bar 10 will be moved in a direction to bring the movable jaw 8 against the opposite side of the object.

Referring to Fig. 3, it will be seen that I have provided a slightly modified form of construction and in said view the end of the bar 4, in which the pinion 12 is located, is also provided with a way 15, in which a toothed dog 16 is pivotally mounted, said toothed dog extending rearwardly and provided with an operating button 17, by means of which it may be disengaged from the toothed rack 18 formed upon the side of the bar 10. By this construction it will be seen that the wrench may be operated in the manner just described to move the stationary and movable jaws upon opposite sides of the object to be operated upon and the dog 16 will prevent said jaws from sepatended parallel thereto and said ends are rating when it is endeavored to turn the object.

When it is desired to separate the jaws from the object, it is only necessary to de press the button 17 and to shove forwardly upon the handle 13.

"ilhile I have shown the preferred forms of my invention, I desire it to be understood that certain modifications may be made therein without departing from the spirit and scope of my invention.

What I claim as new is 1. A device of the class described comprising a stationary jaw, a substantially U-shaped handle having its arms connected to said jaw having a shank secured thereto, a movable jaw, the shank of said movable jaw extending between the arms of said U-shaped handle, a rack formed upon one side of said shank, an operating member surrounding the end of said handle, a rack formed upon the inner surface of the oper ating member, and a pinion pivotally mounted in one arm of said U-shaped handle and meshing with said racks.

2. In a wrench, a bar having a jaw fixed thereto and provided with a rectilinear guide, a movable jaw having a shank fixed thereto and provided with a rack, a toothed pinion pivotally mounted for engagement with said rack, and a sleeve mounted on said bar and having a rack in engagement with said pinion, whereby the pinion may be rotated for moving the shank and movable aw with relation to the bar and fixed jaw.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS W. GIBSON.

ll itnesses D. G. Cross, P. H. HARRIS.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

